406504923 has 16 divisors (see below), whose sum is σ = 591701376. Its totient is φ = 246191040.

The previous prime is 406504831. The next prime is 406504933. The reversal of 406504923 is 329405604.

It is not a de Polignac number, because 406504923 - 2²⁶ = 339396059 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (406504933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54336 + ... + 61362.

It is an arithmetic number, because the mean of its divisors is an integer number (36981336).

Almost surely, 2^406504923 is an apocalyptic number.

406504923 is a deficient number, since it is larger than the sum of its proper divisors (185196453).

406504923 is a wasteful number, since it uses less digits than its factorization.

406504923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8794.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 406504923 is about 20161.9672403265. The cubic root of 406504923 is about 740.7788992506.

The spelling of 406504923 in words is "four hundred six million, five hundred four thousand, nine hundred twenty-three".